JPH11206712A - Image formation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent position error generation between a lens optical axis and the line-of-sight axis of a human by positioning the centroid of a specified number of hinge-connected image formation units below a peal part axis. SOLUTION: In this image formation device 10, two of the image formation unit B1 and an observation unit B2 are integrally hinge-connected and provided in the form of a pendulum around the horizontal axis A3 of a peak part. The image formation unit B1 is provided with an image acquisition device 11 and restrains the direction of a corresponding image formation axis A1 and the observation unit B2 is provided with an observation screen 12 and restrains a corresponding optical axis A2. In such a constitution, the centroid of the image formation unit B1 is positioned below the axis A3 of the peak part of the device 10. They are housed in a casing 13. In such a manner, the deviation of the lens optical axis and the line-of-sight axis is the human is eliminated and visual quality is prevented from being damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention is broadly of the type used by spectacle professionals to perform various position measurements of a person wearing a spectacle frame to fit a lens to the spectacle frame. Imaging device
ces).

[0002]

BACKGROUND OF THE INVENTION Briefly, the purpose of an image forming apparatus is to obtain an image of a wearer of a spectacle frame in order to measure the position of the pupil relative to the rim or frame edge. The image forming apparatus used for this purpose is composed of an image capturing apparatus provided with a video camera for performing necessary imaging (therefore, the image capturing apparatus corresponds to the image forming axis), and an eyeglass expert. An observation screen (and thus an observation axis corresponding to the observation screen) which makes it possible to control the device. The purpose of the imaging device is to aim at one or both eyes optical axis or line of sight of a subject's eye or both eyes on a photographic or video image with respect to a reference frame consisting of a spectacle frame to which a lens is to be fitted.
xis). Therefore, what is important is that the human pupil is at some distance from the mid-plane of the glasses (generally,
To see the fact that they lie in the plane behind the mid-plane at a distance of about 12 mm) and to look horizontally,
Typically, the mid-plane of the glasses frame is tilted at an angle to the vertical (commonly referred to as the pentoscopic angle, which varies between 5 and 15 degrees, with an average value of the order of 10 degrees). Is possible.

If these two parameters are not possible, the resulting parallax will cause a positional error of a few millimeters between the optical axis of the lens and the line of sight of the person, which degrades the visual quality of the person. is there.

[0004]

The broad object of the present invention is to
It is an object to provide a configuration that can solve this problem in a very simple and effective way and has other advantages.

[0005]

More precisely, the invention comprises an image acquisition device with an associated imaging axis, an observation screen with an associated observation axis, and a pendulum in a pendulum around a horizontal pivot at the top. An image forming unit having an image acquisition device and having a corresponding image forming axis whose direction is constrained, and an observation unit having an observation screen and having a corresponding observation axis constrained. The image forming apparatus is characterized in that the center of gravity of the image forming unit is below the pivot. With this configuration, the image forming unit is suspended vertically to perform necessary image formation, particularly when a spectacle specialist grasps the observation unit. Therefore, the direction of the image forming unit does not change regardless of the direction of the observation unit. Nevertheless, in order to properly frame the target person,
The orientation of the observation unit can be changed according to the height of the person and / or the height of the glasses specialist.

[0006] The imaging axis is therefore advantageously systematically perpendicular to the mid-plane of the glasses frame,
This eliminates any parallax during image formation. To achieve this, the imaging axis is tilted relative to the horizontal at an angle equal to the pentoscope angle of the glasses frame when the imaging unit is suspended freely and vertically as described above. That is enough. In other words, the pivot of the imaging device according to the invention naturally provides a constant imaging angle for each imaging operation without the intervention of any other compensation or control means, and thus in a particularly simple and economical manner. Be able to hold. The present invention also provides
By simply inverting the observation unit if necessary, the images previously observed and stored for this purpose can be
It has the advantage that it can be shown to the target person or that a glasses specialist can work with the target person.

In order to achieve this, the magnitude of the relative angular movement between the image forming unit and the observation unit depends on whether the observation unit is in the inverted position (in this position, the observation screen of the observation unit can be viewed from the front). , And the image itself is inverted so that the correct direction is up). The observation unit preferably has a base that allows the mounting of the image forming apparatus by placing the observation unit on a horizontal surface when not in use. According to another feature of the invention, when the image forming apparatus is mounted by placing the observation unit on a horizontal surface, the image forming axis (ie,
The viewing axis of the imaging unit rests at an angle (increased by about 15 °) with respect to the horizontal, substantially equal to the pentoscopic angle of the glasses frame;
Allow a normal tilt of the head relative to the vertical in these circumstances.

Therefore, the idle position of the image forming apparatus according to the present invention is a near vision image forming position.
on). Preferably, a translucent plate is provided at the front of the image forming unit of the image forming apparatus of the present invention, which is perpendicular to the image forming axis and hides the corresponding image obtaining apparatus. Thus, during imaging, the person of interest (one who has accidentally lost any constraint) is not distracted or disturbed by the image capture device, which is beneficial to the quality of the image obtained. is there.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS The features and advantages of the present invention will become apparent from the following description of an embodiment thereof, taken in conjunction with the accompanying drawings. As shown, the image forming apparatus 10 of the present invention has, in a manner known per se, an image acquiring apparatus 11 corresponding to an image forming axis A1 and an observation screen 12 corresponding to an observation axis A2. (FIG. 3). According to the present invention, the image forming apparatus 10 includes a top horizontal pivot A3.
, Two units B1, B2 hinged together in the manner of a pendulum, ie, an image forming unit B1 having an image acquisition device 11 (the direction of the corresponding image forming axis A1 is restricted by the unit B1). And the observation screen 12
(The direction of the corresponding optical axis A2 is restricted by the unit B2). With this configuration, the center of gravity G of the image forming unit B1 is below the pivot A3 of the apparatus 10.

In the illustrated embodiment, the image forming unit B1
Has a casing 13 that houses the image acquisition device 11 and various components associated with the device 11, as described in more detail below. As in the embodiment illustrated in the present application, the image forming unit B1 preferably has an image forming axis A
A translucent plate 14 perpendicular to the
Closes the casing 13 and hides the image acquisition device 11.
The image acquisition device 11 is, for example, a video camera. This type of video camera itself is well known and does not form any part of the present invention and will not be described further herein. In the embodiment shown, the optical axis A4 of the image acquisition device 11
Extends parallel to the translucent plate 14 lying in a vertical plane, so that in the casing 13 between the image acquisition device 11 and the translucent plate 14 an optical axis A4 is formed along the image forming axis A1. A mirror 16 tilted at an angle of 45 ° is provided between the back surface 15 of the casing 13 and the translucent plate 14 so as to be more accurate.

In the illustrated embodiment, another component related to the image acquisition device 11 is a light source 18 provided behind the mirror 16 inside the image forming unit B1.
Is the optical axis A between the mirror 16 and the back surface 15 of the casing 13.
It is consistent with 1. The light source 18 provides a position where the person is in focus. The mirror 16 can be made of a translucent plate so that a person can see the light source 18. Similarly, a hole can be provided at this position of the mirror 16. In the illustrated embodiment, other components associated with the image acquisition device 11 include a power supply 20 for the image acquisition device 11 and the light source 18. The power supply device 20 includes, for example, a storage battery.

Therefore, the weight and the center of gravity G of the power supply device 20
Considering the effect of the power supply device 20 on the position of the power supply device 20, the power supply device 20 is located at the bottom of the casing 13 (preferably below the image acquisition device 11 and the bottom edge 21 of the casing 13).
And between). As in the illustrated embodiment, the image forming unit B1 is preferably provided with a base C1 that allows the unit B1 to be placed on a horizontal surface H as shown in FIG. With this configuration, the image forming axis A1 (that is, the image forming unit B)
The first observation axis) forms an acute angle P with respect to the horizontal when the image forming unit B1 is mounted on the horizontal plane H and the image forming apparatus 10 is mounted. According to the invention, the acute angle P is selected to be approximately equal to the pentoscopic angle of the most common glasses frame.

Therefore, the acute angle P is about 10 °. In the illustrated embodiment, the base C1 of the image forming unit B1 is used.
Is formed directly by the bottom edge 21 of the unit B1. Therefore, the base C1 is a plane that forms an acute angle P ′ (equal to an angle smaller than 90 ° by the acute angle P) with respect to the translucent plate 14. In the illustrated embodiment, the image forming unit B
1 has a front part 1 supporting a translucent plate 14.
3 'and a rear part 1 inclined backward with respect to the front part 13'.
The rear portion 13 "is narrow but deep, and houses the image capture device 11 and at least some of the components associated therewith. According to the invention, the image forming unit B1 is mounted on the observation unit B2 so as to be able to freely pivot around a pivot A3.

For this purpose, the observation unit B2 has, for example, two side flanges 22 as shown, by means of which the observation unit B2 is in the form of a yoke in the casing 13 of the image forming unit B1. And is journalled with the side edge 23 of the unit B1. The corresponding pivot structure will be apparent to those skilled in the art,
Here, further description and illustration are omitted. If necessary, it can be pivoted using a hollow journal. The hollow journal can be used to pass a wire (not shown) that constantly connects the image acquisition device 11 of the image forming unit B1 and the observation screen 12 of the observation unit B2. In the illustrated embodiment, the observation unit B2 has a cross member 25 at the rear of the image forming unit B1, the cross member 25 extending between the flanges 22 and the inclined observation screen 12 at the center. I support it.

The cross member 25 has the same thickness over all or part of the height of the observation unit B2, or has a thin flange above and / or below at least part of the height of the observation unit B2. Extends through.
As in the illustrated embodiment, the image forming apparatus 10 of the present invention is preferably portable. Therefore, for example, as shown in the drawing, the observation unit B2 is provided with the gripping means 26, so that a spectacle specialist can easily operate the system. In the embodiment shown, the gripping means 26 comprises:
Immediately adjacent to the flange 22 of the viewing unit B2, having two handles 27 extending along the respective side edges of the viewing unit B2 to the rear of the image forming unit B1,
Each handle 27 has an opening 28.

As shown, for example, the handles 27 are substantially parallel to each other and substantially perpendicular to the translucent plate 14 of the image forming unit B1, and the rear portion 13 "of the casing 13 is located between the handles 27. In the illustrated embodiment, it is preferable that the observation unit B2 be provided with a base C2 that allows the observation unit B2 to be placed on the horizontal plane H and the image forming apparatus 10 to be placed thereon, as shown in FIG. Given this configuration and the points described below, the image forming axis A1 of the image forming unit B1 is horizontally positioned when the image forming unit B2 is placed on the horizontal plane H and the image forming apparatus 10 is installed in this manner. Form an acute angle P. In this case,
The acute angle P is the same as in the case described above.

Therefore, in practice, the acute angle P is about 10 °. In the illustrated embodiment, the base C2 of the observation unit B2 is connected to the bottom surface 2 of both handles 27 of the observation unit B2.
9 formed. Therefore, the bottom surface 29 is substantially flat. According to the present invention, the bottom surface 29 forms an acute angle P ′ with respect to the support surface D of the observation unit B2 of the image forming unit B1. As shown, for example, the support surface D is
7 is formed directly by the front surface 30. In the embodiment shown, the observation unit B2 has a control panel 31 used by a glasses specialist to control the device.

The control panel 31 is arranged, for example, on the back of one of the handles so as to be accessible from the handle 27. In the embodiment shown, the control panel 31 is mounted diagonally on the top of the handle 27. To use the image forming apparatus 10 of the present invention, that is, using the image forming apparatus 10 as shown in FIGS. 4 and 5, an image of a person 32 wearing a glasses frame 33 to be fitted to a lens is acquired. For this reason, if the corresponding observation is to see far away, the glasses specialist 34 simply
Holding the handle 27 of the observation unit B2 with the both hands,
The unit may be directed toward the person 32. The glasses specialist 34 holds the image forming apparatus 10 of the present invention at an appropriate height and conveniently frames the person 32 according to whether the person 32 is tall (FIG. 4) or short (FIG. 5).

In any case, due to the structure of the present invention, the center of gravity G of the image forming unit B1 is vertically below the pivot A3 of the apparatus, and is always in the same direction only by gravity. Therefore, with the above-described configuration, the image forming axis A1 systematically forms an acute angle P with the horizontal. As shown in FIG. 4, the acute angle P is substantially equal to the pentoscopic angle of the glasses frame 33 (i.e., the angle formed by the intermediate plane M of the rim or edge of the glasses frame 33 with respect to the vertical).
Thus, the imaging axis A1 is always substantially perpendicular to the intermediate plane M at all times, so that any parallax is avoided. When the image forming apparatus 10 of the present invention is placed by placing the base C2 provided on the observation unit B2 on the horizontal plane H, the image forming axis A1 of the image forming unit B1 is changed by the above-described image forming unit B1. Thus, the side edge of the front portion 13 'of the casing 13 of the image forming unit B1 abuts on the support surface D provided on the observation unit B2, regardless of whether it is still suspended from the observation unit B2. Even if it is placed on the support surface D, it stands still at an acute angle P with respect to the horizontal.

As described above, at this mounting position, the acute angle P
Increases the angle, preferably by about 15 °, so that the head can be tilted with respect to the vertical (as is usual under such circumstances). In this case, the image forming axis A1 of the image forming unit B1 makes an acute angle P ″ with the horizontal. Therefore, the rest position of the image forming apparatus 10 according to the present invention is, in particular, a near vision image acquisition.
ion). However, the image forming apparatus 10 of the present invention, as described above and shown in FIG.
The base C1 provided in the image forming unit B1 is
It can also be placed by placing it on top. According to the present invention, the size, that is, the relative movement between the image forming movement B1 and the observation unit B2 is such that the observation unit B2 is in the reverse position (in this position, the observation screen 12 is viewed from the front as shown in FIG. 7). That is enough to occupy).

In other words, in this case, the observation axis A2 also faces forward. In this connection, the displayed image itself is also inverted. Thus, the person of interest (ie, the wearer of the glasses) can see their image on the viewing screen 12. This is an image previously captured by the image forming unit B1, or an instantaneous image. In each case, it is a reversal image and can therefore be viewed with the correct direction up. In other words, the image is oriented right up due to the mirror image effect. In the illustrated embodiment, when the image forming apparatus 10 is mounted with the image forming unit B1 placed on the horizontal plane H and the observation unit B2 in an inverted position, the observation screen 12 of the observation unit B2 is made substantially vertical. Is preferred.

Normally, a lock button (not shown) is provided to lock the observation unit B2 in a controlled immobile state when the observation unit B2 is in the inverted position. In the above description, it is assumed that the center of gravity G of the image forming unit B1 (the position of the center of gravity G is determined based on the mass distribution in the unit) is constant (fixed). According to another feature of the present invention, it is preferable that the position of the center of gravity G can be adjusted and the acute angle P of the image forming axis A1 of the image forming unit B1 with respect to the horizontal can be optimally adjusted. In a configuration not obvious to the person skilled in the art and therefore not described here, the power supply 20 itself associated with the image acquisition device 11 is translucent inside the casing 13 of the imaging unit B1 and with the back 15 of the casing 13. in between the plate 14, you can adjust the position from the front to the rear so as to traverse pivot A3 as indicated by the dashed line 20 _I, 20 _II in FIG.

The pointer 3 attached to the power supply 20
6 project from the casing 13 through slots 37 in the corresponding side edges 23 of the casing 13 so as to provide an external display of the position of the power supply 20 and therefore of the value of the acute angle P. In this case, the rear portion 13 ″ of the casing 13
Is set so that the pointer 36 has a continuous movement path.
It extends over the entire width of 3 '. FIG. 9 and FIG.
6 illustrates another feature of the present invention, which is illustrated in FIGS.
Can be used, in particular, when the observation unit B2 is moved from the upright position shown in FIGS. 6 and 9 to the reverse position shown in FIGS. 7 and 10. According to a feature of the present invention, the image forming apparatus 10 of the present invention includes a detecting means 39 responsive to the position of the observation unit B2, and an image formed on the observation screen 12 when the observation unit B2 is at the reverse position. And control inversion means 40 for inversion.

In this case, the reversal of the image necessary to ensure the correct orientation is made automatically, which is an excellent advantage. Detection means 39 used for this purpose
Can be composed of easily available position sensors. In the embodiment shown, the detection means 39 comprises a box section 41.
Housed within. The front of the box section 41 supports the viewing screen 12 and is free to move within the chamber 43 and forms a conductive weight 42 of a switch 44 (e.g., a ball bearing or a fixed amount of mercury as shown). A). Observation unit B
In the upright position 2 the switch 44 is open (FIG. 9),
In the reverse position, the switch 44 is closed (FIG. 1).
0). The force required to release the conductive weight 42 is large at the reverse position.

The inverting means 40 uses an electric circuit (not shown). This electric circuit is, for example, a part of an electronic circuit card 45 as shown here, and a switch 44 is connected to at least a part of the card. The electronics card 45 controlling the viewing screen 12 preferably controls two superimposed display layers. One display layer has high color capabilities for displaying an image of a person of interest, and the other display layer has at least one other type of image (eg, type and / or lines and / or drawings). Has a low color capability for superimposed display. These two images are, of course, stored in memory independently of each other. In a configuration obvious to those skilled in the art (and thus not described here), the reversing means 40 reverses the image of the person with respect to the horizontal symmetry axis and the other images (ie the information carrying images) with the horizontal symmetry axis and vertical. It is designed to be inverted with respect to the axis of symmetry.

Thus, the visual effect of inversion is compensated. More specifically, in this case, the person observes himself when the viewing screen 12 is positioned as shown in FIG. 7 as if it were reflected in a mirror, and the viewing screen 12 as shown in FIG. When located, the operator observes the person as if he were facing the operator. Of course, the present invention is not limited to the illustrated and described embodiments, but can be implemented and used in any modified form. More specifically, the imaging device of the present invention provides various frames ("physical") on a human face.
Frame or "virtual" frame). It is also possible to display a stored image of the face on which the "virtual" image of the frame is superimposed.

[Brief description of the drawings]

FIG. 1 is a perspective view of an image forming apparatus of the present invention as viewed from the front.

FIG. 2 is a perspective view of the image forming apparatus of the present invention as viewed from the rear.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is a side view showing a reduced use of the image forming apparatus of the present invention in a first framing mode by a target person.

FIG. 5 is a side view similar to FIG. 4, showing the use of the person in the second framing mode.

FIG. 6 shows an idle position of the image forming apparatus according to the present invention.
FIG. 6 is a side view similar to FIG. 5 and FIG.

FIG. 7 is a side view similar to FIGS. 4, 5, and 6 showing a reversing position of the image forming apparatus of the present invention.

FIG. 8 is a partially cutaway side view showing an enlarged part of another embodiment of the image forming apparatus of the present invention.

FIG. 9 is a partial view corresponding to FIG. 6, showing another feature of the present invention.

FIG. 10 is a partial view corresponding to FIG. 7, showing another feature of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Image forming apparatus 11 Image acquisition apparatus 12 Observation screen 13 Casing 39 Detecting means 40 Inverting means 44 Switch A1 Image forming axis A2 Observation axis B1 Image forming unit B2 Observation unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Michel Noche France 95230 Swazi Sue Mont Morency Rue de Montmorency 82 Ter (72) Inventor Patrick Orrelle France 93330 Neuilly-sur-Marne Rue de Suffrent 4

Claims (21)

[Claims] 1. An image acquisition device with an associated imaging axis, an observation screen with an associated observation axis, and two units hinged together in a pendulum manner about a horizontal horizontal axis at the top, ie, an image acquisition device. An image forming apparatus comprising: an image forming unit having an apparatus and an image forming unit in which the direction of a corresponding image forming axis is constrained; and An imaging device characterized by being below a pivot. 2. The image forming apparatus according to claim 1, wherein the image forming unit is attached to the observation unit so as to freely pivot. 3. The image forming apparatus according to claim 1, wherein the position of the center of gravity of the image forming unit can be adjusted. 4. A power supply associated with the image acquisition device, the power supply being mounted within the casing of the imaging unit such that its position can be adjusted laterally with respect to the pivot. The image forming apparatus according to claim 3, wherein: 5. The power supply associated with the image capture device is located below the image capture device.
An image forming apparatus according to claim 1. 6. The image forming apparatus according to claim 1, wherein the image forming unit has a semi-transparent plate mounted on a front portion of the image forming apparatus perpendicular to the image forming axis and concealing the image acquiring device. apparatus. 7. The image acquisition device, wherein the optical axis is parallel to the translucent plate, further comprising a mirror disposed at an angle of 45 ° between the image acquisition device and the translucent plate. The image forming apparatus according to claim 6, wherein: 8. The image forming apparatus according to claim 6, wherein the image forming unit has a light source therein. 9. The image forming apparatus according to claim 1, wherein the observation unit has a gripper accessible by a specialist in glasses. 10. The grasping means of the observation unit,
The image forming apparatus according to claim 9, further comprising two handles along respective side edges of the observation unit. 11. The observation unit according to claim 1, wherein the observation unit has a base on which the image forming apparatus can be placed by placing the observation unit on a horizontal plane.
An image forming apparatus according to claim 1. 12. The image forming unit according to claim 11, wherein the image forming axis of the image forming unit forms an acute angle with the horizontal when the image forming apparatus is placed with the observation unit placed on a horizontal plane. An image forming apparatus according to claim 1. 13. The observation unit has a base on which the observation unit is placed on a longitudinal plane so that an image forming apparatus can be placed thereon, and the base of the observation unit is the two handles of the observation unit. The image forming apparatus according to claim 10, wherein the image forming apparatus is formed by a bottom surface. 14. The apparatus according to claim 1, wherein the bottom surface of the handle of the observation unit is substantially flat and forms an acute angle with a support surface of the image forming unit on the observation unit. 14. The image forming apparatus according to claim 13. 15. The image forming apparatus according to claim 1, wherein the image forming unit has a base on which the image forming unit is placed on a horizontal surface so that the image forming apparatus can be mounted thereon. apparatus. 16. The image forming unit according to claim 16, wherein the image forming axis of the image forming unit forms an acute angle with the horizontal when the image forming unit is placed on a horizontal plane and the image forming apparatus is mounted. 16. The image forming apparatus according to item 15. 17. The magnitude of the relative angular movement between the image forming unit and the viewing unit is sufficient to allow the viewing unit to occupy an inverted position where the viewing screen can be viewed from the front. The image forming apparatus according to claim 1, wherein the size of the image forming apparatus is small. 18. The magnitude of the relative angular movement between the image forming unit and the viewing unit is sufficient to allow the viewing unit to occupy an inverted position where the viewing screen can be viewed from the front. Size
The observation screen of the observation unit is substantially vertical when the image forming apparatus is mounted on a horizontal surface and the observation unit is at the reverse position. Item 17. An image forming apparatus according to Item 16. 19. A detecting means responsive to a position of the observation unit and controlling a reversing means capable of reversing an image displayed on the observation screen when the observation unit is at the reversing position. The image forming apparatus according to claim 17, wherein: 20. The viewing screen has two superimposed display layers, one display layer displaying an image of a person of interest, and the other display layer displaying at least one other image of a cooking type. 2. The display of claim 1, wherein the reversing means reverses the image of the person with respect to a horizontal symmetry axis and the other image with respect to a horizontal symmetry axis and a vertical symmetry axis.
10. The image forming apparatus according to 9. 21. A portable image forming apparatus according to claim 1, wherein: